Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Interface ItemSelectable - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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Java^TM 2 Platform
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java.awt
Interface ItemSelectable

All Known Subinterfaces:: ButtonModel

All Known Implementing Classes:: Checkbox, CheckboxMenuItem, Choice, List, AbstractButton, JComboBox

public interface ItemSelectable

The interface for objects which contain a set of items for which zero or more can be selected.

Method Summary

void addItemListener(ItemListener l)
          Add a listener to recieve item events when the state of an item changes.

Object[] getSelectedObjects()
          Returns the selected items or null if no items are selected.

void removeItemListener(ItemListener l)
          Removes an item listener.

Method Detail

getSelectedObjects

public Object[] getSelectedObjects()

Returns the selected items or null if no items are selected.

addItemListener

public void addItemListener(ItemListener l)

Add a listener to recieve item events when the state of an item changes. If l is null, no exception is thrown and no action is performed.

Parameters:: l - the listener to recieve events
See Also:: ItemEvent

removeItemListener

public void removeItemListener(ItemListener l)

Removes an item listener. If l is null, no exception is thrown and no action is performed.

Parameters:: l - the listener being removed
See Also:: ItemEvent